Amanda Joy Michalka was born April 10th, 1991 in California, USA to Nickname "A.J." and has a sister, Alyson Michalka

Amanda began studying acting at the age of 9 and booked her first national commercial on her very first audition. She has been working ever since, and has Guest Starred on CBS, FOX, HBO, ABC, WB and NBC. She is best known for her role as "Shannon," on the CBS drama, "The Guardian." Prior to becoming an actress, she had a very successful modeling career, appearing in several National ads, which included magazines, store posters and other merchandising for Disney, Mattel, Playmates Toys, Zutopia, and American Girl to name just a few. Amanda is an accomplished musician, singer and published songwriter. She has been playing the piano for 7 years, but writes most of her songs on the guitar. Her songs are very "Guitar Driven." She and her older sister, Alyson a.k.a. "Aly" are currently recording their first "Aly & A.J." CD, that will soon be released in the mainstream market. Amanda's hobbies are dance, cooking, horseback riding, mountain biking, reading and hanging out with her 2 dogs. Her best friend is her sister Alyson, who is also an actress and can be seen playing the role of "Keely" on Disney Channel's "Phil of the future"

Credit: up4u.net